Statut |
Confirmé |
Série |
LPTHE-PPH |
Domaines |
hep-ph |
Date |
Mardi 16 Juillet 2024 |
Heure |
14:00 |
Institut |
LPTHE |
Salle |
Library (13-14.401) |
Nom de l'orateur |
Saha |
Prenom de l'orateur |
Akash Kumar |
Addresse email de l'orateur |
akashks [at] iisc [dot] ac [dot] in |
Institution de l'orateur |
Indian Institute of Sciences, Bengaluru |
Titre |
Searching Dark Matter using Astrophysical and Cosmological tools |
Résumé |
The non-gravitational nature of dark matter (DM) is one of the most important open
questions in modern physics. In this talk, I will try to explore how both
astrophysical and cosmological tools can help us in the search for DM. In the
first half, I will discuss how Dark matter (DM) particles can get captured inside
the Sun due to DM-electron interaction. As the number of these captured DM
particles increases, they can annihilate and produce different Standard Model (SM)
final states, including neutrinos and anti-neutrinos. Using data-sets from the
IceCube neutrino observatory we put the most stringent constraints on DM-electron
scattering cross sections in the DM mass range 10 GeV to 10^5 GeV. In the second
half, I will show the effects of evaporating primordial black hole (PBH) DM on
Intergalactic Medium (IGM) temperature and ionization history. Lyman-alpha forest
is a powerful probe of IGM temperature. Using existing Lyman-alpha forest data-
sets we put competitive limits on the fraction of DM made up of PBH. |
Numéro de preprint arXiv |
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Commentaires |
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Fichiers attachés |
- DarkMatter_compressed.pdf (2835121 bytes)
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